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  1. H

    working in Canada

    Any sparks on here ever worked out in Canada?
  2. Majid Khan

    Insulation resistance testing

    Hi guys, Could anyone help me Please with the following questions? I have an assignment to do which has a question that states, Insulation resistance testing has been carried out on the installation and the following result obtained: Live to Live = 195 M ohms Live to earth = 0.75 M ohms...
  3. M

    Parallel cables

    Help with calculation please. If separate cable measure : 10Ω, 5Ω, 5Ω, 4Ω and 2Ω what would it be in parallel? I get this so far 1 1 1 1 1 1 = What happens next? 10 + 5 + 5 + 5 + 4 + 2
  4. P

    impulse withstand voltage

    Can anyone tell me what the minimum impulse withstand voltage is for a 500AMP BS88 fuse. I can only find up to 400A. Please only reply with the answer and not any rhetorical questions please. This is concerning surge protection devices. Thanks.
  5. matt1386

    Trainee questions to answer

    Morning all, I thought it would be a good idea for us trainees to ask questions between each other to keep things fresh in the head, with help from the pro's if nobody can answer the question you ask Basically, whoever answers the question, they put the next question up and so on...
  6. R

    what are your tricks of the trade

    Hi guys Just a bored sparks with very little on this evening. Might be a boring or repeated thread if so I apologise in advance. If anyone was to ask you what is your best trick of the trade what would it be? Simple, complicated, down right odd, anything that gets you out of a hole or just a...
  7. B

    Job interviews

    Hi, can anyone give me an idea of what questions are asked at job interviews for a domestic or commercial electrician and what answer you'd give or expect? much appreciated, Bryn
  8. the pict

    A question I cant answer

    I have lad working with me at present on a outside job really quick learner, good with his hands and uses his head but yesterday he asked why is the primary insulation so tough and why is the copper so brittle in SWA I have never though about it I just accepted it answers, anyone, PIct
  9. S

    Installation Method

    " The supply to the detached workshop has been installed using a two-core steel wired armoured cable (SWA). Describe the most appropiate method of testing continuity of CPC to this distribution circuit "
  10. K

    Quick answer

    stop asking “a quick question” as a thread title. You may get someone who has a slight interest to answer. I can’t even be arsed to open a “quick question” anymore because even though the subject may interest me, 9 times out of 10 it contains utter drivel. If you’ve something worth asking...
  11. G

    2395 electrode test standby generator answer

    question probably how would you test resistance of electrode on a tt system on a stand by generator. firstly ask permission and notify the customer that the standby generator will be locked off thus premisses will be with out a back up power supply. generator isolated lock it off and retain...
  12. C

    Atl this should answer your questions!!!

    Apprentice firm goes bust with debts of £6m (From Daily Echo)
  13. Baker1988

    rcd on a tt system

    hi ya i have a home work question which is: What additional protection is required on a TT system, justify your answer, Stating what regulation from bs7671 requires additional protection. I am sure that answer is a rcd but i just cant fine the reg that states that you need a rcd the closest i...
  14. L

    IR test 2391 The way to answer ?

    Hi guys, Just wanted to get your advice on answering a 2391 question. If i was to get a question "Describe how to carry out an IR test on a radial socket circuit of a new installation" for example , would i be able to mention the safe isolation procedure like this 1)Seek Permission /Inform...
  15. S

    MAXIMUM DEMAND... nic assessment

    hi guys. if i calculate maximum demand like i got 6 circuit 32a cooker 32a upstairs ring 32a down s. ring 20a,radial 6a upstairs light 6a down stairs light get the higgest one and add the rest together get 40% of it and finally add to highest one.. do u thing is that right?? and also do...
  16. stidge

    voltage???

    Hi all just replaced oven and cooker hood new for old , replaced hood noticed metal capping run at angle that had been nicked with old screw ? Anyway did IR test etc everything fine, switched both on just to make sure I put my testers from cooker to hood and got 3/4 or 5 volts varying ???? Any...
  17. L

    Working live question

    I've just come across this C & G 2357 sample question & in my opinion after a quick look at the regulations I would say non of the answers are valid or are they just badly worded....or is it just me! 1. Under the Electricity at Work Regulations live working is only permitted: a) when other...
  18. W

    Panel/Convector heater?

    Have a customer with no heating at all in 2 of her bedrooms ( No gas supply also ) both rooms are around 6 x 3 meters .. Any suggestions for a decent panel/convector heater that will heat these rooms adequately?
  19. C

    voltage drop calculation

    i want to know the formula for voltage drop calculation for 3 core x50mm2 hv cable feeding 1000kva transformer 13.8kv. the cable is xlpe ,armored..it is connected from Ring main unit
  20. S

    Does anyone know the answer to this?

    FIT is link to inflation (RPI). But what would happen if we were to enter a period of deflation? would the FIT reduce or would be be capped at its current level at the time? Thanks

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